Ok.I had my previously activated ipad mini sim on Verizon prepaid in my AT&T rmini.I was out of state.I ran out of data,so I called Verizon.They were not able to add more data because there was nothing on my account.No device,no credit card,nothing but the phone number attached to the tablet.I told them it was AT&T after none of the I.D. numbers worked.I talked to several CSR's,and everyone of them tried like hell to get my data up and running.It didn't happen.Everyone of them told me the Verizon account software had been recently upgraded and it was causing many problems.I ended up putting data on from AT&T prepaid through the rmini.When I got home,I put the Verizon sim back in my mini.I logged into my account on the mini and all my information was back.So for the heck of it,I logged into My Verizon on my desktop.It was different.Before when I would log into Verizon on my desktop,I was not able to do anything with my account.It told me to access my account on my mini.Well,now I have the option to add data plus every thing else I could do from my mini and then some.One of the new options is:go to Device Details;go to Change Your Prepaid Device.Under Select Your Reason For This Change,one of the options is Received device from other source.I have not tried to put my AT&T rmini in there yet because I am finishing off my data first.If anyone is willing to give this a shot,please post your results as I will post mine at the end of the month.Maybe Verizon is starting to play ball!We can only hope.
Edit:I also had gotten the IMEI from my Verizon mini and that did not work either.